400131423400 has 48 divisors (see below), whose sum is σ = 979269019200. Its totient is φ = 151628748480.

The previous prime is 400131423389. The next prime is 400131423413. The reversal of 400131423400 is 4324131004.

It is a super-2 number, since 2×400131423400² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52645072 + ... + 52652671.

It is an arithmetic number, because the mean of its divisors is an integer number (20401437900).

Almost surely, 2^400131423400 is an apocalyptic number.

400131423400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400131423400 is an abundant number, since it is smaller than the sum of its proper divisors (579137595800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400131423400 is a wasteful number, since it uses less digits than its factorization.

400131423400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105297778 (or 105297769 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 400131423400 its reverse (4324131004), we get a palindrome (404455554404).

The spelling of 400131423400 in words is "four hundred billion, one hundred thirty-one million, four hundred twenty-three thousand, four hundred".